+++ /dev/null
-/* xscreensaver-command, Copyright (c) 1991-1998
- * by Jamie Zawinski <jwz@jwz.org>
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <sys/types.h>
-
-#ifdef HAVE_SYS_SELECT_H
-# include <sys/select.h>
-#endif /* HAVE_SYS_SELECT_H */
-
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#include <X11/Xproto.h> /* for CARD32 */
-#include <X11/Xlib.h>
-#include <X11/Xatom.h>
-#include <X11/Xutil.h> /* for XGetClassHint() */
-#include <X11/Xos.h>
-
-#include "remote.h"
-
-#ifdef _VROOT_H_
-ERROR! you must not include vroot.h in this file
-#endif
-
-extern char *progname;
-extern Atom XA_SCREENSAVER, XA_SCREENSAVER_VERSION, XA_SCREENSAVER_RESPONSE;
-extern Atom XA_SCREENSAVER_ID, XA_SCREENSAVER_TIME;
-extern Atom XA_VROOT, XA_SELECT, XA_DEMO;
-
-
-static XErrorHandler old_handler = 0;
-static Bool got_badwindow = False;
-static int
-BadWindow_ehandler (Display *dpy, XErrorEvent *error)
-{
- if (error->error_code == BadWindow)
- {
- got_badwindow = True;
- return 0;
- }
- else
- {
- fprintf (stderr, "%s: ", progname);
- return (*old_handler) (dpy, error);
- }
-}
-
-
-
-static Window
-find_screensaver_window (Display *dpy, char **version)
-{
- int i;
- Window root = RootWindowOfScreen (DefaultScreenOfDisplay (dpy));
- Window root2, parent, *kids;
- unsigned int nkids;
-
- if (version) *version = 0;
-
- if (! XQueryTree (dpy, root, &root2, &parent, &kids, &nkids))
- abort ();
- if (root != root2)
- abort ();
- if (parent)
- abort ();
- if (! (kids && nkids))
- abort ();
- for (i = 0; i < nkids; i++)
- {
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- char *v;
-
- if (XGetWindowProperty (dpy, kids[i],
- XA_SCREENSAVER_VERSION,
- 0, 200, False, XA_STRING,
- &type, &format, &nitems, &bytesafter,
- (unsigned char **) &v)
- == Success
- && type != None)
- {
- if (version)
- *version = v;
- return kids[i];
- }
- }
- fprintf (stderr, "%s: no screensaver is running on display %s\n", progname,
- DisplayString (dpy));
- return 0;
-}
-
-
-static int
-send_xscreensaver_command (Display *dpy, Atom command, long arg,
- Window *window_ret)
-{
- char *v = 0;
- Window window = find_screensaver_window (dpy, &v);
- XWindowAttributes xgwa;
-
- if (window_ret)
- *window_ret = window;
-
- if (!window)
- return -1;
-
- /* Select for property change events, so that we can read the response. */
- XGetWindowAttributes (dpy, window, &xgwa);
- XSelectInput (dpy, window, xgwa.your_event_mask | PropertyChangeMask);
-
- if (command == XA_SCREENSAVER_TIME ||
- command == XA_SCREENSAVER_VERSION)
- {
- XClassHint hint;
- memset (&hint, 0, sizeof(hint));
- if (!v || !*v)
- {
- fprintf (stderr, "%s: version property not set on window 0x%x?\n",
- progname, (unsigned int) window);
- return -1;
- }
-
- XGetClassHint(dpy, window, &hint);
- if (!hint.res_class)
- {
- fprintf (stderr, "%s: class hints not set on window 0x%x?\n",
- progname, (unsigned int) window);
- return -1;
- }
-
- fprintf (stdout, "%s %s", hint.res_class, v);
-
- if (command != XA_SCREENSAVER_TIME)
- {
- fprintf (stdout, "\n");
- }
- else
- {
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- unsigned char *data = 0;
- Bool active_p = False;
-
- if (XGetWindowProperty (dpy, window, XA_VROOT,
- 0, 0, False, XA_WINDOW,
- &type, &format, &nitems, &bytesafter,
- &data)
- == Success
- && type != None)
- active_p = True;
-
- if (data) free (data);
- data = 0;
-
- if (XGetWindowProperty (dpy, window,
- XA_SCREENSAVER_TIME,
- 0, 1, False, XA_INTEGER,
- &type, &format, &nitems, &bytesafter,
- &data)
- == Success
- && type == XA_INTEGER
- && data)
- {
- CARD32 time32 = *((CARD32 *)data);
- time_t tt = (time_t) time32;
-
- if (active_p)
- fprintf (stdout, ": screen blanked since ");
- else
- /* suggestions for a better way to phrase this are welcome. */
- fprintf (stdout, ": screen non-blanked since ");
- fprintf (stdout, "%s", ctime(&tt));
- if (data) free (data);
- }
- else
- {
- if (data) free (data);
- fprintf (stdout, "\n");
- fflush (stdout);
- fprintf (stderr, "%s: no time on window 0x%x (%s %s).\n",
- progname, (unsigned int) window,
- hint.res_class, (v ? v : "???"));
- return -1;
- }
- }
-
- /* No need to read a response for these commands. */
- return 1;
- }
- else
- {
- XEvent event;
- long arg1 = arg;
- long arg2 = 0;
-
- if (arg < 0)
- abort();
- else if (arg == 0 && command == XA_SELECT)
- abort();
- else if (arg != 0 && command == XA_DEMO)
- {
- arg1 = 300; /* version number of the XA_DEMO protocol, */
- arg2 = arg; /* since it didn't use to take an argument. */
- }
-
- event.xany.type = ClientMessage;
- event.xclient.display = dpy;
- event.xclient.window = window;
- event.xclient.message_type = XA_SCREENSAVER;
- event.xclient.format = 32;
- memset (&event.xclient.data, 0, sizeof(event.xclient.data));
- event.xclient.data.l[0] = (long) command;
- event.xclient.data.l[1] = arg1;
- event.xclient.data.l[2] = arg2;
- if (! XSendEvent (dpy, window, False, 0L, &event))
- {
- fprintf (stderr, "%s: XSendEvent(dpy, 0x%x ...) failed.\n",
- progname, (unsigned int) window);
- return -1;
- }
- }
- XSync (dpy, 0);
- return 0;
-}
-
-
-static int
-xscreensaver_command_response (Display *dpy, Window window, Bool verbose_p)
-{
- int fd = ConnectionNumber (dpy);
- int timeout = 10;
- int status;
- fd_set fds;
- struct timeval tv;
-
- while (1)
- {
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
- memset(&tv, 0, sizeof(tv));
- tv.tv_sec = timeout;
- status = select (fd+1, &fds, 0, &fds, &tv);
-
- if (status < 0)
- {
- char buf[1024];
- sprintf (buf, "%s: waiting for reply", progname);
- perror (buf);
- return status;
- }
- else if (status == 0)
- {
- fprintf (stderr, "%s: no response to command.\n", progname);
- return -1;
- }
- else
- {
- XEvent event;
- XNextEvent (dpy, &event);
- if (event.xany.type == PropertyNotify &&
- event.xproperty.state == PropertyNewValue &&
- event.xproperty.atom == XA_SCREENSAVER_RESPONSE)
- {
- Status st2;
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
- char *msg = 0;
-
- old_handler = XSetErrorHandler (BadWindow_ehandler);
- XSync (dpy, False);
-
- st2 = XGetWindowProperty (dpy, window,
- XA_SCREENSAVER_RESPONSE,
- 0, 1024, True,
- AnyPropertyType,
- &type, &format, &nitems, &bytesafter,
- (unsigned char **) &msg);
-
- if (got_badwindow)
- {
- fprintf (stdout,
- "%s: xscreensaver window has been deleted.\n",
- progname);
- return 0;
- }
-
- if (st2 == Success && type != None)
- {
- if (type != XA_STRING || format != 8)
- {
- fprintf (stderr,
- "%s: unrecognized response property.\n",
- progname);
- if (msg) XFree (msg);
- return -1;
- }
- else if (!msg || (msg[0] != '+' && msg[0] != '-'))
- {
- fprintf (stderr,
- "%s: unrecognized response message.\n",
- progname);
- if (msg) XFree (msg);
- return -1;
- }
- else
- {
- int ret = (msg[0] == '+' ? 0 : -1);
- if (verbose_p || ret != 0)
- fprintf ((ret < 0 ? stderr : stdout),
- "%s: %s\n",
- progname,
- msg+1);
- XFree (msg);
- return ret;
- }
- }
- }
- }
- }
-}
-
-
-int
-xscreensaver_command (Display *dpy, Atom command, long arg, Bool verbose_p)
-{
- Window w = 0;
- int status = send_xscreensaver_command (dpy, command, arg, &w);
- if (status == 0)
- status = xscreensaver_command_response (dpy, w, verbose_p);
- fflush (stdout);
- fflush (stderr);
- return status;
-}
-
-
-void
-server_xscreensaver_version (Display *dpy,
- char **version_ret,
- char **user_ret,
- char **host_ret)
-{
- Window window = find_screensaver_window (dpy, 0);
-
- Atom type;
- int format;
- unsigned long nitems, bytesafter;
-
- if (version_ret)
- *version_ret = 0;
- if (host_ret)
- *host_ret = 0;
-
- if (!window)
- return;
-
- if (version_ret)
- {
- char *v = 0;
- XGetWindowProperty (dpy, window, XA_SCREENSAVER_VERSION, 0, 1,
- False, XA_STRING, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &v);
- if (v)
- {
- *version_ret = strdup (v);
- XFree (v);
- }
- }
-
- if (user_ret || host_ret)
- {
- char *id = 0;
- const char *user = 0;
- const char *host = 0;
-
- XGetWindowProperty (dpy, window, XA_SCREENSAVER_ID, 0, 512,
- False, XA_STRING, &type, &format, &nitems,
- &bytesafter, (unsigned char **) &id);
- if (id && *id)
- {
- const char *old_tag = " on host ";
- const char *s = strstr (id, old_tag);
- if (s)
- {
- /* found ID of the form "1234 on host xyz". */
- user = 0;
- host = s + strlen (old_tag);
- }
- else
- {
- char *o = 0, *p = 0, *c = 0;
- o = strchr (id, '(');
- if (o) p = strchr (o, '@');
- if (p) c = strchr (p, ')');
- if (c)
- {
- /* found ID of the form "1234 (user@host)". */
- user = o+1;
- host = p+1;
- *p = 0;
- *c = 0;
- }
- }
-
- }
-
- if (user && *user && *user != '?')
- *user_ret = strdup (user);
- else
- *user_ret = 0;
-
- if (host && *host && *host != '?')
- *host_ret = strdup (host);
- else
- *host_ret = 0;
-
- if (id)
- XFree (id);
- }
-}
projects / xscreensaver / blobdiff